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MicroprocessorTemperature Controls
EZ-TempTM
Instruction Manual
70 Maple Street East Longmeadow, MA 01028Ph 413-525-7700 Fx
413-525-8306
Carlin Combustion Technology, Inc.
Tech support 800-989-2275 carlincombustion.com
© Copyright 2008 — Carlin Combustion Technology, Inc.
Installer/servicer — Except where specifically stated otherwise,
this manual must be used only by a qualified service technician.
Read and follow all instructions in this manual and in the
appliance manual. Failure to comply with this or other requirements
in this manual could result in severe personal injury, death or
substantial property damage.
This symbol calls out a hazard that could cause severe personal
injury, death or substantial property damage if the instructions
given are not followed.
Wiring: Refer to EZ-Temp data sheet for wiring information.
Verify ratings: Verify the ratings of the control meet the
require-ments of the appliance as specified in the appliance
instructions. Refer to the EZ-Temp control data sheet for required
electrical supply and load ratings. Verify that the controls,
wiring and instal-lation comply with all applicable codes.
Electrical shock hazard: Disconnect power to appliance when
wiring or servicing any electrical component.
Scald hazard: Water hotter than 130°F can cause serious burns or
death. Follow water heating appliance manufacturer’s guidelines
when installing temperature limit controls - DO NOT install a
control that can be set at a higher temperature than specified.
Also verify that the installation includes all water temperature
regulating means needed to ensure the safety of building occupants,
in compliance with all applicable codes.
Verify operation: Test the controls/appliance to verify the
appliance operates as specified in the appliance manual before
leaving the installation.
EZTLit10
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EZ-Temp Microprocessor Temperature Control — Instruction
manual
– 2 – Carlin part number MNEZT Rev. 09/11/2008
Sensor, J-box & wellEZ-Temp
Sensor & existing well, J-box
B
C
12
34
5
6
7
1011
12
3
4
5
6
8
9
6
2
7
1
2
3
4
5
6
7
8
9
10
11
EZ-Temp well
EZ-Temp sensor
EPDM rubber retainer
Retainer washer
Jam nut
Sensor leads
J-box, 4 x 4
Lock washer
Existing well
Well clamp
Sensor retainer plug
12
13
12 Flat washer
13 Tensioning screw
A
ConfigurationsCarlin EZ-Temp components are available in the
following configurations, allowing use with existing wells in
addition to EZ-Temp wells.
Surface-mount sensors are also available.
• Control kits EZ-Temp controls mount to a standard 4x4 J-box or
can be panel mounted.
Control kits include the control and sensor(s) (item 2) plus
hardware needed for mounting to an existing well (items 10 and 11).
To obtain an EZ-Temp well and hardware, obtain an EZ-Temp well kit,
below.
• Well kits EZ-Temp wells are available in the sizes shown
below. Well kits include a
well (item 1), rubber sensor retainer (item 3), retainer washer
(item 4), jam nut (item 5), and J-box lock washer (item 8).
• Sensor Kits Sensor kits include only the sensor (item 2).
Sensors are available in single
and dual configurations (two sensors in the same assembly). For
controls that use multiple sensors, obtain separate sensor kits or
a sensor kit and a dual sensor.
Install sensor(s)To install a new immersion well:1. Turn off
power to the appliance and close isolation valves.2. Follow
appliance instructions to drain the appliance so water line is
below
the insertion tapping.3. Remove existing well and sensor. Apply
a small amount of pipe dope to the
new well and secure in tapping.4. Insert EZ-Temp sensor into
well and secure sensor in place as described in
the following.5. Refill appliance with water, following
appliance manual procedures.
When routing sensor wires, avoid sharp edges and use strain
relief bushings at penetrations to prevent movement or electrical
shorting of the sensor. Sensor wires are not low voltage, and must
be routed in conduit.
Configuration A: Sensor and well only1. Insert the sensor into
well (1) until the sensor (2) tip bottoms in the well
socket.2. EZ-Temp well: Slide the rubber retainer (3) over the
sensor wires until it
firmly contacts the sensor casing. Slide the retainer washer (4)
and the jam nut (5) over the wires. Thread the jam nut into the
well until snug.
3. Existing well: Press the sensor retainer plug (11) into the
well until it securely holds the sensor wires, to prevent movement
of the sensor.
Configuration B: Sensor, EZ-Temp well and J-box1. Insert the
sensor into well (1) until the sensor (2) tip bottoms in the
well
socket.2. Slide the rubber retainer (3) over the sensor wires
until it firmly contacts the
sensor casing. Slide the retainer washer (4) over the wires.3.
Slide the lock washer (8), J-box (7), and jam nut (4) over the
wires.4. Thread the jam nut into the well and tighten to secure the
J-box and sensor
in place.
Configuration C: Sensor, EZ-Temp well and J-box1. Remove the
center knock-out from one side of the J-box (7).2. Position the
well clamp (10) over the end of the well (9) (sensor not yet
installed) and slide the well clamp (10) toward the side of the
J-box (9) engaging the keyslot opening with the well undercut.
3. Position the flat washer (12) over the open knockout and
install the tension-ing screw (13) through the flat washer (12) and
into the well clamp (10), tighten.
4. Insert the sensor into well (9) until the sensor (2) tip
bottoms in the well socket.
5. Press the sensor retainer plug (11) into the well until it
securely holds the sensor wires, to prevent movement of the
sensor.
Mount the control1. Insert sensor wire terminals into the
labelled openings on the back of the
control. Press into place firmly.2. Attach the control to the
4x4 J-box or panel mount, as desired.
Wire the control1. Control wiring (including sensor wires) must
be routed through conduit
or electrical enclosures. Follow all applicable codes and the
appliance manual.
2. Follow the burner and appliance wiring diagrams to connect
the control(s) into the appliance limit circuit.
3. For specific applications, contact your Carlin supplier for
further informa-tion.
Set the control1. Follow the appliance manual to set the correct
limit temperature for the
appliance. To adjust the EZ-Temp control:•
Insertascrewdriverintothesettingslotandrotateuntiltheindicatorpoints
to the desired temperature.2. Test the operation of the
appliance and the new limit control(s) to verify
correct operation.3. NOTE: EZ-Temp controls have a subtractive
differential — control contacts
trigger when the temperature setting is reached. Contacts reset
after tem-perature drops below setpoint minus the differential
amount.
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Multiplesensoroption(1or2) (Using individual and/or dual sensor
assemblies)
Easyremotesense (Electronic sensors, wired to control)
Smartmanualreset (Manual reset only if operating limit doesn’t
open)
Servicemanresetprotection (Latch-up after three consecutive
lockouts (1))
Power-independentlockout (Power cycling won’t reset from lockout
or latch-up)
DiagnosticLED’s (Power, call for heat, and lockout/latchup)
SMCTechnology (2)
(1)
Latch-upmodeshutsdownthecontrolafterthreeconsecutivelockouts,andrequiresaspecialproceduretoreset.Thisensurestheownerwillcallinalicensedtechniciantotroubleshootandcorrectburnerproblems.
(2)
The90000providestwolimitrelays.Carlin’spatentedSMCtechnology(SafetyMonitoringCircuit)monitorsthecontactsofbothrelays.Lockout
occursifalimitrelaycontactisfoundclosedwhenitshouldbeopen.
Tech support 800-989-2275 carlincombustion.com
Specifications•
Carlin’sModel90000microprocessor-operated,multiple-contacttem-
peraturelimitcontrolsareavailableinthreeconfigurations,describedbelow.Eachmodelprovidestwocontacts—oneforoperatinglimitandonefromhighlimit.
•
Refertoseparateproductlistingsheetsforpre-definedmodels,orre-questacontroltomeetyourspecifications,withintheavailablerangeslistedbelow.
90000A
Dual limit temperature control• operating and high limit action•
smart manual reset on high limit• 2 sensors (oper. and high limit)•
1 contact — operating limit• 1 contact — high limit
90000BRedundant limit temperature control• operating and high
limit• smart manual reset on high limit• 1 sensor• oper. and limit
contacts in series
90000CRedundant limit temperature control• operating and high
limit action• smart manual reset on high limit• 2 sensors (oper.
and high limit)• oper. and limit contacts in series
Control model A B C
Control power input (red-white wire) 120 VAC, 11 VA
Contacts2 indepen-
dent2 in series 2 in series
Contact rating Full loadLocked rotor
120 VAC, 10 AMPS120 VAC, 60 AMPS
Wires Quantity 6 3 3
120 VAC Hot / Neutral red-white / white
Oper. limit IN / OUTblack-green /
blackNA NA
High limit IN / OUT
Limits OUT
black-red / black-yellow
NA NA
NA black black
Adjustable oper. limit range Any range between 50°F to 240°F
Fixed high limit temperature Any value from 160°F to 240°F
Fixed differential (subtractive) Any value from 5°F to 100°F
Operating temperature limits +32°F to +140°F
Storage temperature limits –40°F to +185°F
AgenciesUL & ULC recognized component
United States & Canada
Datasheet
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Model 90000 Microprocessor Temperature Controls — Data sheet —
Operation & Dimensions
Carlin part number MN90000 Rev.
03/29/05©Copyright2005—CarlinCombustionTechnology,Inc.
Operation (Seewiringdiagramsbelowforwiringconnections.) Power
OFF
Withnopowerappliedtothered-whitewire,alllightsareoff.Powercan
bewireddirectlyfromappliance120vacterminaltomaintainpoweratalltimes.Orjumperred-whitewireandblack-greenwiretocyclepowerwiththeappliancelimitcircuit.
Power ON
Whenpowerisappliedtothered-whitewire,thegreenLEDturnson.
Self-test
Whenpowerisapplied,the90000performsaself-test,checkingsensor(s)andmicroprocessorandverifyinglimitcontactsareopen.Thepower-uptestlastsfrom3to5seconds.The90000continuesdiagnosticchecingduringtheoperatingcycleaswell.Anyself-checkfailurecausesalockout(seebelow).
Operate
Ifthetemperatureattheoperatingsensor(s)isbelowsetpointbyatleastthefixeddifferential,thecontrolclosestheoperatinglimitcontacts.TheamberLEDturnson.
Stand-by When the operating sensor(s) see setpoint temperature
or above,
the90000openstheoperatinglimitcontact.TheamberLEDturnsoff.
Limit action
Ifthehighlimitsensor(s)seeatemperatureabovehighlimitsetting,the90000opensthehighlimitcontacts,turnsontheredLEDandcheckstheoperatinglimitcontacts.Iftheoperatinglimitcontactsareopen,thecontrolwillautomaticallyresetwhentemperaturedropsbelowhighlimitsettingminusdifferential.ThehighlimitcontactscloseandtheredLEDturnsoff.
Lockout
Ifthehighlimitsensor(s)seesatemperatureabovehighlimitsettingandthe90000findstheoperatinglimitcontactsclosed,theredLEDturnsonandlockout
occurs.(Lockoutalsooccursonanydiagnostictestfailure.)Whenthetemperaturedropsbelowhighlimitsettingminusdifferential,resetthecontrolbypressingthemanualresetbutton.Thecontrolwillnotresetbycyclingpoweroffandon.
Latch-up
Ifthe90000locksoutthreeconsecutivetimes,itenterslatch-up.Resetfromlatch-uprequiresaspecialprocedure,intendedtorequirelicensed
serviceman
intervention.Duringlatch-up,theredLEDstaysonandthegreenLEDflashes.Resetasfollows:
............
Temperaturemustbelessthanhighlimitsettingminusdifferential.
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Holdresetbuttonatleast10seconds.ThegreenLEDflashesfaster.
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Continueholdingbuttonanother20seconds.ThecontrolresetsandtheredLEDturnsoff.
Configurations• Control kits —90000controlsmount toa
standard4x4J-box,
suppliedwiththecontrol.Mounttheboxdirectlytoawell(neworexisting)withhardwaresupplied,orpanelmount.Seebelowfordimensions.
• Well kits
—Wellsfor90000sensorsareavailableinthesizesshownbelow.Wellkitsincludesensormountinghardwaredesignedtoholdsensorsecurelyinposition.
• Sensors —Sensorsareavailable in singleanddual
configura-tions.
Model 90000A, B & C diagnostic LED’sGREEN –OFF –ON Power
–FLASHING Latch-up
RED –OFF –ONLockout
AMBER –OFF –ON Control call for heat
Powermustflowthroughthecontactsinthedirectionshown.Changingflowdirectionwillcausethecontroltolockoutorfailtooperate.
Electrical shock
hazard:Disconnectpowertoappliancewhenwiringorservicinganyelectricalcomponent.